C.R.S. § 19-5-101

(1) The juvenile court may, upon petition, terminate the parent-child legal relationship between a parent or parents, or a possible parent or parents, and a child in: (a) Proceedings under section 19-1-104 (1)(d); (a.5) Proceedings under section 19-5-103.5 (2)(d); (b) Proceedings under section 19-5-105 ; (c) Proceedings under section 19-5-203 (1)(d), (1)(e), (1)(f), (1)(j), and (1)(k); or (d) Proceedings under section 19-5-105.5">19-5-105.5 . (2) No parent shall relinquish the parent-child legal relationship with a child other than in accordance with the provisions of this article. (3) A termination by a court of a parent-child legal relationship pursuant to proceedings under this section or any section described by subsection (1) of this section shall not be deemed to terminate a sibling relationship between sibling children who are parties to the termination of the parent-child legal relationship.